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Improve pledge() and unveil() further

Browse source 
- Fix getpriority()
- Add AT_MINSIGSTKSZ
- Fix bugs in BPF code
- Show more stuff in printargs.com
- Write manual test for pledge.com
- pledge() now generates tinier BPF code
- Have pledge("exec") only enable execve()
- Fix pledge.com chroot setuid functionality
- Improve pledge.com unveiling of ape loader
This commit is contained in:
Justine Tunney 2022-07-24 02:56:03 -07:00
parent 31ac58a57b
commit f968e2a726
17 changed files with 722 additions and 412 deletions
Download patch file Download diff file Expand all files Collapse all files

1
libc/sysv/consts.sh
View file

@ -464,6 +464,7 @@ syscon auxv AT_EXECFN 31 31 15 999 2014 31 # address of string co
syscon auxv AT_SYSINFO_EHDR 33 0 0 0 0 0
syscon auxv AT_STACKBASE 0 0 0 0 13 0
syscon auxv AT_EXECPATH 31 31 15 999 2014 31 # FreeBSD name for AT_EXECFN
syscon auxv AT_MINSIGSTKSZ 51 0 0 0 0 0 # FreeBSD name for AT_EXECFN
syscon auxv AT_CANARY 0 0 16 0 0 0
syscon auxv AT_CANARYLEN 0 0 17 0 0 0
syscon auxv AT_NCPUS 0 0 19 0 0 0

2
libc/sysv/consts/AT_MINSIGSTKSZ.S Normal file
View file

@ -0,0 +1,2 @@
#include "libc/sysv/consts/syscon.internal.h"
.syscon auxv,AT_MINSIGSTKSZ,51,0,0,0,0,0

42
libc/sysv/consts/auxv.h
View file

@ -6,21 +6,29 @@ COSMOPOLITAN_C_START_
extern const long AT_BASE;
extern const long AT_BASE_PLATFORM;
extern const long AT_CANARY;
extern const long AT_CANARYLEN;
extern const long AT_CLKTCK;
extern const long AT_DCACHEBSIZE;
extern const long AT_EGID;
extern const long AT_EHDRFLAGS;
extern const long AT_ENTRY;
extern const long AT_EUID;
extern const long AT_EXECFD;
extern const long AT_EXECFN;
extern const long AT_EXECPATH;
extern const long AT_FLAGS;
extern const long AT_GID;
extern const long AT_HWCAP2;
extern const long AT_HWCAP;
extern const long AT_ICACHEBSIZE;
extern const long AT_MINSIGSTKSZ;
extern const long AT_NCPUS;
extern const long AT_NOTELF;
extern const long AT_NO_AUTOMOUNT;
extern const long AT_OSRELDATE;
extern const long AT_PAGESIZES;
extern const long AT_PAGESIZESLEN;
extern const long AT_PAGESZ;
extern const long AT_PHDR;
extern const long AT_PHENT;
@ -28,40 +36,41 @@ extern const long AT_PHNUM;
extern const long AT_PLATFORM;
extern const long AT_RANDOM;
extern const long AT_SECURE;
extern const long AT_STACKBASE;
extern const long AT_STACKPROT;
extern const long AT_SYSINFO_EHDR;
extern const long AT_TIMEKEEP;
extern const long AT_UCACHEBSIZE;
extern const long AT_UID;
extern const long AT_STACKBASE;
extern const long AT_EXECPATH;
extern const long AT_CANARY;
extern const long AT_CANARYLEN;
extern const long AT_NCPUS;
extern const long AT_PAGESIZES;
extern const long AT_PAGESIZESLEN;
extern const long AT_TIMEKEEP;
extern const long AT_STACKPROT;
extern const long AT_EHDRFLAGS;
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#define AT_BASE SYMBOLIC(AT_BASE)
#define AT_BASE_PLATFORM SYMBOLIC(AT_BASE_PLATFORM)
#define AT_CANARY SYMBOLIC(AT_CANARY)
#define AT_CANARYLEN SYMBOLIC(AT_CANARYLEN)
#define AT_CLKTCK SYMBOLIC(AT_CLKTCK)
#define AT_DCACHEBSIZE SYMBOLIC(AT_DCACHEBSIZE)
#define AT_EGID SYMBOLIC(AT_EGID)
#define AT_EHDRFLAGS SYMBOLIC(AT_EHDRFLAGS)
#define AT_ENTRY SYMBOLIC(AT_ENTRY)
#define AT_EUID SYMBOLIC(AT_EUID)
#define AT_EXECFD SYMBOLIC(AT_EXECFD)
#define AT_EXECFN SYMBOLIC(AT_EXECFN)
#define AT_EXECPATH SYMBOLIC(AT_EXECPATH)
#define AT_FLAGS SYMBOLIC(AT_FLAGS)
#define AT_GID SYMBOLIC(AT_GID)
#define AT_HWCAP SYMBOLIC(AT_HWCAP)
#define AT_HWCAP2 SYMBOLIC(AT_HWCAP2)
#define AT_ICACHEBSIZE SYMBOLIC(AT_ICACHEBSIZE)
#define AT_MINSIGSTKSZ SYMBOLIC(AT_MINSIGSTKSZ)
#define AT_NCPUS SYMBOLIC(AT_NCPUS)
#define AT_NOTELF SYMBOLIC(AT_NOTELF)
#define AT_NO_AUTOMOUNT SYMBOLIC(AT_NO_AUTOMOUNT)
#define AT_OSRELDATE SYMBOLIC(AT_OSRELDATE)
#define AT_PAGESIZES SYMBOLIC(AT_PAGESIZES)
#define AT_PAGESIZESLEN SYMBOLIC(AT_PAGESIZESLEN)
#define AT_PAGESZ SYMBOLIC(AT_PAGESZ)
#define AT_PHDR SYMBOLIC(AT_PHDR)
#define AT_PHENT SYMBOLIC(AT_PHENT)
@ -69,18 +78,11 @@ COSMOPOLITAN_C_END_
#define AT_PLATFORM SYMBOLIC(AT_PLATFORM)
#define AT_RANDOM SYMBOLIC(AT_RANDOM)
#define AT_SECURE SYMBOLIC(AT_SECURE)
#define AT_STACKBASE SYMBOLIC(AT_STACKBASE)
#define AT_STACKPROT SYMBOLIC(AT_STACKPROT)
#define AT_SYSINFO_EHDR SYMBOLIC(AT_SYSINFO_EHDR)
#define AT_TIMEKEEP SYMBOLIC(AT_TIMEKEEP)
#define AT_UCACHEBSIZE SYMBOLIC(AT_UCACHEBSIZE)
#define AT_UID SYMBOLIC(AT_UID)
#define AT_STACKBASE SYMBOLIC(AT_STACKBASE)
#define AT_EXECPATH SYMBOLIC(AT_EXECPATH)
#define AT_CANARY SYMBOLIC(AT_CANARY)
#define AT_CANARYLEN SYMBOLIC(AT_CANARYLEN)
#define AT_NCPUS SYMBOLIC(AT_NCPUS)
#define AT_PAGESIZES SYMBOLIC(AT_PAGESIZES)
#define AT_PAGESIZESLEN SYMBOLIC(AT_PAGESIZESLEN)
#define AT_TIMEKEEP SYMBOLIC(AT_TIMEKEEP)
#define AT_STACKPROT SYMBOLIC(AT_STACKPROT)
#define AT_EHDRFLAGS SYMBOLIC(AT_EHDRFLAGS)
#endif /* COSMOPOLITAN_LIBC_CALLS_AUXV_H_ */